AMD Radeon RX 580 vs AMD Radeon HD 6990M Crossfire

Comparative analysis of AMD Radeon RX 580 and AMD Radeon HD 6990M Crossfire videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory, Technologies. Benchmark videocards performance analysis: PassMark - G3D Mark, PassMark - G2D Mark, Geekbench - OpenCL, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), GFXBench 4.0 - Car Chase Offscreen (Frames), GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Fps), 3DMark Fire Strike - Graphics Score.

AMD Radeon RX 580

AMD Radeon HD 6990M Crossfire

Differences

Reasons to consider the AMD Radeon RX 580

Videocard is newer: launch date 5 year(s) 9 month(s) later
Around 76% higher core clock speed: 1257 MHz vs 715 MHz
Around 3% higher pipelines: 2304 vs 2240
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 14 nm vs 40 nm
2x more maximum memory size: 8 GB vs 2x2 GB
8.9x more memory clock speed: 8000 MHz vs 900 MHz

Launch date	18 April 2017 vs 12 July 2011
Core clock speed	1257 MHz vs 715 MHz
Pipelines	2304 vs 2240
Manufacturing process technology	14 nm vs 40 nm
Maximum memory size	8 GB vs 2x2 GB
Memory clock speed	8000 MHz vs 900 MHz

Compare benchmarks

GPU 1: AMD Radeon RX 580
GPU 2: AMD Radeon HD 6990M Crossfire

Name	AMD Radeon RX 580	AMD Radeon HD 6990M Crossfire
PassMark - G3D Mark	8827
PassMark - G2D Mark	767
Geekbench - OpenCL	39028
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	116.142
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	1022.932
CompuBench 1.5 Desktop - T-Rex (Frames/s)	9.235
CompuBench 1.5 Desktop - Video Composition (Frames/s)	84.034
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	607.721
GFXBench 4.0 - Car Chase Offscreen (Frames)	11281
GFXBench 4.0 - Manhattan (Frames)	3695
GFXBench 4.0 - T-Rex (Frames)	3349
GFXBench 4.0 - Car Chase Offscreen (Fps)	11281
GFXBench 4.0 - Manhattan (Fps)	3695
GFXBench 4.0 - T-Rex (Fps)	3349
3DMark Fire Strike - Graphics Score	1005

Compare specifications (specs)

	AMD Radeon RX 580	AMD Radeon HD 6990M Crossfire
Essentials
Architecture	GCN 4.0	Terascale 2
Code name	Polaris 20	Blackcomb XTX
Design	Radeon RX 500 Series
GCN generation	4th Gen
Launch date	18 April 2017	12 July 2011
Launch price (MSRP)	$229
Place in performance rating	341	not rated
Price now	$169.99
Type	Desktop	Laptop
Value for money (0-100)	76.21
Technical info
Boost clock speed	1340 MHz
Compute units	36
Core clock speed	1257 MHz	715 MHz
Floating-point performance	6.2 TFLOPs
Manufacturing process technology	14 nm	40 nm
Pipelines	2304	2240
Pixel fill rate	42.88 GP/s
Render output units	32
Stream Processors	2304
Texture fill rate	192.96 GTexel/s
Texture Units	144
Thermal Design Power (TDP)	185 Watt
Transistor count	5,700 million	2x1700 Million
Video outputs and ports
Display Connectors	1x HDMI, 3x DisplayPort
DisplayPort support
Dual-link DVI support
HDMI
VGA
Compatibility, dimensions and requirements
Bridgeless CrossFire
Interface	PCIe 3.0 x16
Length	241 mm
Recommended system power (PSU)	500 Watt
Supplementary power connectors	1x 8-pin
Laptop size		large
API support
DirectX	12	11
OpenCL	2.0
OpenGL	4.5
Vulkan
Memory
Maximum RAM amount	8 GB	2x2 GB
Memory bandwidth	256 GB/s
Memory bus width	256 bit	256 Bit
Memory clock speed	8000 MHz	900 MHz
Memory type	GDDR5	GDDR5
Shared memory		0
Technologies
4K H264 Decode
4K H264 Encode
AMD Eyefinity
AMD Radeon™ Chill
AMD Radeon™ ReLive
AppAcceleration
CrossFire
FreeSync
H265/HEVC Decode
H265/HEVC Encode
HDMI 4K Support
LiquidVR
PowerTune
TrueAudio
Unified Video Decoder (UVD)
Video Code Engine (VCE)
Virtual Super Resolution (VSR)
VR Ready